feat: Add database migration, seeding, and testing commands with Makefile integration

backend/cmd/dbtest/main.go

@@ -0,0 +1,84 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/timetracker/backend/internal/models"
+)
+
+func main() {
+	// Get database configuration with sensible defaults
+	dbConfig := models.DefaultDatabaseConfig()
+
+	// Initialize database
+	fmt.Println("Connecting to database...")
+	if err := models.InitDB(dbConfig); err != nil {
+		log.Fatalf("Error initializing database: %v", err)
+	}
+	defer func() {
+		if err := models.CloseDB(); err != nil {
+			log.Printf("Error closing database connection: %v", err)
+		}
+	}()
+	fmt.Println("✓ Database connection successful")
+
+	// Test a simple query
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	// Get the database engine
+	db := models.GetEngine(ctx)
+
+	// Test database connection with a simple query
+	var result int
+	err := db.Raw("SELECT 1").Scan(&result).Error
+	if err != nil {
+		log.Fatalf("Error executing test query: %v", err)
+	}
+	fmt.Println("✓ Test query executed successfully")
+
+	// Check if tables exist
+	fmt.Println("Checking database tables...")
+	var tables []string
+	err = db.Raw("SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'").Scan(&tables).Error
+	if err != nil {
+		log.Fatalf("Error checking tables: %v", err)
+	}
+
+	if len(tables) == 0 {
+		fmt.Println("No tables found. You may need to run migrations.")
+		fmt.Println("Attempting to run migrations...")
+
+		// Run migrations
+		if err := models.MigrateDB(); err != nil {
+			log.Fatalf("Error migrating database: %v", err)
+		}
+		fmt.Println("✓ Migrations completed successfully")
+	} else {
+		fmt.Println("Found tables:")
+		for _, table := range tables {
+			fmt.Printf("  - %s\n", table)
+		}
+	}
+
+	// Count users
+	var userCount int64
+	err = db.Model(&models.User{}).Count(&userCount).Error
+	if err != nil {
+		log.Fatalf("Error counting users: %v", err)
+	}
+	fmt.Printf("✓ User count: %d\n", userCount)
+
+	// Count companies
+	var companyCount int64
+	err = db.Model(&models.Company{}).Count(&companyCount).Error
+	if err != nil {
+		log.Fatalf("Error counting companies: %v", err)
+	}
+	fmt.Printf("✓ Company count: %d\n", companyCount)
+
+	fmt.Println("\nDatabase test completed successfully!")
+}